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Give the equation of a line perpendicular to the line y = 4x having the same y-intercept.

  • Math -

    we won't do your homework or tests for you. We will critique your work.

  • Math -

    I don't even know where or how to start.Im lost on these.

  • Math -

    This is a test your teacher gave you. If you don't know where to start, you need to fail it. Getting answers from others will just put you in a deeper hole. Discuss this situation with your teacher.

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    The series of questions you asked are routine questions.
    If you are finishing a semester and are reviewing for exams, you should know how to do these.

    For the above question,
    - how are slopes of perpendicular lines related ?
    - what point is associated with the y-intercept of an equation of the form
    y = mx + b ?

  • Math -

    The y intercept of your y = 4x line is zero, and since the second line also has that y intercept, both lines must go through the origin (0,0).

    The product of the slopes (m) for the two lines must be -1, if they are perpendicular. The first line has a slope of 4. You should be able to figure out the rest of it.

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